Alongside more sizzling photos, the singer spoke about her upcoming Super Bowl XLVII halftime show performance, her work ethic and her influences.
"One of the reasons I connect to the Super Bowl is that I approach my shows like an athlete," she told the magazine. "You know how they sit down and watch whoever they're going to play and study themselves? That's how I treat this. I watch my performances, and I wish I could just enjoy them, but I see the light that was late. I see, ‘Oh God, that hair did not work.' Or ‘I should never do that again.' I try to perfect myself. I want to grow, and I'm always eager for new information."
And while Beyoncé is obviously one of the most successful stars in the industry, that success came at a price.
"I worked so hard during my childhood to meet this goal: By the time I was 30 years old, I could do what I want," she said. "I've reached that. I feel very fortunate to be in that position. But I've sacrificed a lot of things, and I've worked harder than probably anyone I know, at least in the music industry. So I just have to remind myself that I deserve it."
Jay-Z's better half added, "I love my job, but it's more than that: I need it. Because before I gave birth, it was the only time in my life, all throughout my life, that I was lost."
But even Bey has to admit, "I now know that, yes, I am powerful. I'm more powerful than my mind can even digest and understand."
The February issue hits newsstands Jan. 22.